The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted. Concept introduction: If an − OH group and an − OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two − OR groups are attached to the same carbon atom, then the compound is known as an acetal.

Question

Determine whether the following monosaccharides have D or L configuration and classify them based on number of carbons and whether they are aldoses or ketoses: CH2OH CH2OH НО- C=0 C=0 НО- H- H- HO- Н-с-он Н-с-он H- -HO- НО H- H- -HO- НО -с-н CH2OH Но- ČH2OH CH2OH CH2OH

Answer 1

Question

Chapter 18, Problem 18.124EP

(a)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

(b)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

(c)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

(d)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

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Determine whether the following monosaccharides have D or L configuration and classify them based on number of carbons and whether they are aldoses or ketoses: CH2OH CH2OH НО- C=0 C=0 НО- H- H- HO- Н-с-он Н-с-он H- -HO- НО H- H- -HO- НО -с-н CH2OH Но- ČH2OH CH2OH CH2OH

Classify the glycosidic bonds in each of the following disaccharides.

Consider each of the following disaccharides: a) Label the acetal and hemiacetal in each disaccharide. b) Number the carbons in each of their monosaccharide rings. c) Classify the glycosidic linkage as α or β and use numbers to designate its location. d) Draw the Fishcher projections of the monosaccharides formed when each of thedisaccharides is hydrolyzed? e) Draw the chair conformation of each monosaccharide, where applicable.

Answer 2

Question

Chapter 18, Problem 18.124EP

(a)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

(b)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

(c)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

(d)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

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Answer 3

Question

Chapter 18, Problem 18.124EP

(a)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

(b)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

(c)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

(d)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

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Answer 4

Question

Chapter 18, Problem 18.124EP

(a)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

(b)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

(c)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

(d)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

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Answer 5

Chapter 18, Problem 18.124EP

(a)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

(b)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

(c)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

(d)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

Answer 6

Chapter 18, Problem 18.124EP

(a)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

Answer 7

Chapter 18, Problem 18.124EP

(a)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

Answer 8

(b)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

Answer 9

(b)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

Answer 10

(c)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

Answer 11

(c)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

Answer 12

(d)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

Answer 13

(d)

Interpretation Introduction

Interpretation: The number of acetal and hemiacetal carbon atoms in the given disaccharide has to be predicted.

Concept introduction: If an −OH group and an −OR group are attached to the same carbon atom, then the compound is known as a hemiacetal. If two −OR groups are attached to the same carbon atom, then the compound is known as an acetal.

Answer 14

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Answer 25

Ch. 18.1 - In terms of mass percent, which of the following...Ch. 18.1 - Which of the following is the most abundant type...Ch. 18.2 - Which of the following statements concerning the...Ch. 18.2 - Prob. 2QQ Ch. 18.3 - Prob. 1QQ Ch. 18.3 - Prob. 2QQ Ch. 18.3 - Which of the following is not a possible value for...Ch. 18.3 - The complete hydrolysis of a polysaccharide...Ch. 18.4 - Prob. 1QQ Ch. 18.4 - Prob. 2QQ

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